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ksss
20 lines
617 B
Ruby
20 lines
617 B
Ruby
class Object
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##
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# call-seq:
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# obj.tap{|x|...} -> obj
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#
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# Yields <code>x</code> to the block, and then returns <code>x</code>.
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# The primary purpose of this method is to "tap into" a method chain,
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# in order to perform operations on intermediate results within the chain.
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#
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# (1..10) .tap {|x| puts "original: #{x.inspect}"}
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# .to_a .tap {|x| puts "array: #{x.inspect}"}
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# .select {|x| x%2==0} .tap {|x| puts "evens: #{x.inspect}"}
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# .map { |x| x*x } .tap {|x| puts "squares: #{x.inspect}"}
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#
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def tap
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yield self
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self
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end
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end
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